Learn how to recover deleted items, such as email, contacts, calendar appointments, and tasks in Outlook.

Defragment your Windows 10 PC. Optimizing your drives can help your PC run smoother and boot up faster.

Outlook.com、Hotmail、Live、または MSN のメール アカウントにサインインできない場合、サインインまたはサインアウトする方法がわからない場合は、次の解決方法を試してみてください。

Contact Microsoft Office Support for assistance with Microsoft 365, Office, Windows, Xbox, Surface products and more.

Many users find that using an external keyboard with keyboard shortcuts for Excel helps them work more efficiently. For users with mobility or vision disabilities, keyboard shortcuts can be easier than using the touchscreen and are an essential alternative to using a mouse.

Find out how to connect your Xbox Wireless Controller to a Windows device.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn about file sharing over a network in Windows. Note: This article focuses on how to share files or folders over a Local Area Network (or LAN), such as connected computers within your home or workplace.If you are trying to find out how to share a file over the Internet, for example with a friend or family member, OneDrive provides easy ways to accomplish this.

Learn how to view, manage, and delete cookies in Microsoft Edge.

Learn how to troubleshoot and fix problems setting up your email in Outlook.